My Freelander 1 remote fob seems to eat batteries, I get to unlock the doors only a couple of times with a new battery before it starts bleeping to tell me that the battery is low. I have tried about 10 new batteries of different makes and sources and I have cleaned the contacts in the fob and also cleaned the switches with contact cleaner but nothing has worked. Has anybody got any other ideas? I really don't want to spend £140 at the dealer for a new fob.